ramnit | 8d34337c1b7f3fa479f4ffbd5de750e59f56d35961481e3331b92a60c8669e7e

Analysis

max time kernel
94s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
25-06-2022 03:12

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General

Target

8d34337c1b7f3fa479f4ffbd5de750e59f56d35961481e3331b92a60c8669e7e.dll
Size

793KB
MD5

358ecfffc983f647648eaa9e7c7b146c
SHA1

efa46704790e370b0c4a1d313120494bffca3571
SHA256

8d34337c1b7f3fa479f4ffbd5de750e59f56d35961481e3331b92a60c8669e7e
SHA512

b55a8c065b5a87c88bd000d0e68cafd216621c0e297e49975fa6c5612e5dd4e8e8381a800ff0bc89278211a68f0643a00c3f533114dfe951596933a25c4af8ad

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
Executes dropped EXE 3 IoCs

Processes:

rundll32mgr.exerundll32Srv.exeDesktopLayer.exe

pid process

1312 rundll32mgr.exe
1308 rundll32Srv.exe
1128 DesktopLayer.exe

pid	process
1312	rundll32mgr.exe
1308	rundll32Srv.exe
1128	DesktopLayer.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\rundll32Srv.exe	upx
C:\Windows\SysWOW64\rundll32Srv.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral2/memory/1308-142-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1128-143-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1312-145-0x0000000000400000-0x000000000042A000-memory.dmp	upx

Loads dropped DLL 1 IoCs

Processes:

rundll32mgr.exe

pid process

1312 rundll32mgr.exe
Drops file in System32 directory 2 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe
File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe

pid	process
1312	rundll32mgr.exe

description	ioc	process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

Processes:

rundll32Srv.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\px1443.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4432 1312 WerFault.exe rundll32mgr.exe

pid	pid_target	process	target process
4432	1312	WerFault.exe	rundll32mgr.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3850989333"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{0EC71094-F448-11EC-A58B-FA63415F8E77} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3999894845"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30967892"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "362900079"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30967892"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30967892"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3850989333"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
1128	DesktopLayer.exe
1128	DesktopLayer.exe
1128	DesktopLayer.exe
1128	DesktopLayer.exe
1128	DesktopLayer.exe
1128	DesktopLayer.exe
1128	DesktopLayer.exe
1128	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

3824 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

3824 iexplore.exe
3824 iexplore.exe
4380 IEXPLORE.EXE
4380 IEXPLORE.EXE
4380 IEXPLORE.EXE
4380 IEXPLORE.EXE

pid	process
3824	iexplore.exe

pid	process
3824	iexplore.exe
3824	iexplore.exe
4380	IEXPLORE.EXE
4380	IEXPLORE.EXE
4380	IEXPLORE.EXE
4380	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 4960 wrote to memory of 2992	4960	rundll32.exe	rundll32.exe
PID 4960 wrote to memory of 2992	4960	rundll32.exe	rundll32.exe
PID 4960 wrote to memory of 2992	4960	rundll32.exe	rundll32.exe
PID 2992 wrote to memory of 1312	2992	rundll32.exe	rundll32mgr.exe
PID 2992 wrote to memory of 1312	2992	rundll32.exe	rundll32mgr.exe
PID 2992 wrote to memory of 1312	2992	rundll32.exe	rundll32mgr.exe
PID 2992 wrote to memory of 1308	2992	rundll32.exe	rundll32Srv.exe
PID 2992 wrote to memory of 1308	2992	rundll32.exe	rundll32Srv.exe
PID 2992 wrote to memory of 1308	2992	rundll32.exe	rundll32Srv.exe
PID 1308 wrote to memory of 1128	1308	rundll32Srv.exe	DesktopLayer.exe
PID 1308 wrote to memory of 1128	1308	rundll32Srv.exe	DesktopLayer.exe
PID 1308 wrote to memory of 1128	1308	rundll32Srv.exe	DesktopLayer.exe
PID 1128 wrote to memory of 3824	1128	DesktopLayer.exe	iexplore.exe
PID 1128 wrote to memory of 3824	1128	DesktopLayer.exe	iexplore.exe
PID 3824 wrote to memory of 4380	3824	iexplore.exe	IEXPLORE.EXE
PID 3824 wrote to memory of 4380	3824	iexplore.exe	IEXPLORE.EXE
PID 3824 wrote to memory of 4380	3824	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8d34337c1b7f3fa479f4ffbd5de750e59f56d35961481e3331b92a60c8669e7e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8d34337c1b7f3fa479f4ffbd5de750e59f56d35961481e3331b92a60c8669e7e.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1312
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 476
      4⤵
      Program crash
      PID:4432
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1308
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1128
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3824
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3824 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1312 -ip 1312
1⤵
PID:3104

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
4b5f63131c2ad19a1b25b9c790cb101f

SHA1
23ffbecbbc2c90699e632a1bb789f5e6c6975fbe

SHA256
f712507488d39ee6f3913255fa4e3f64b7f8d7be0c920c02546e3647f87603da

SHA512
dc1d4c9b5157e79230fa05b1bde5e76f1ab2bdb08883ec74cccedc3ef88b1dff05fe91b36ab72086be6899d70fa9056d7c19fa0f285578b7cfa141f9e2cb6240

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
404B

MD5
6dbf6da0f1af51e1b7a7b73835d28a6c

SHA1
89c89aa76cfce6240fe1d5a9bb08db5c84c23445

SHA256
ec67fcdc34a38b975e8b2e660dd41e5ef9860f8018ae9a7020eb2fc858450900

SHA512
378f0e756cdea8d2d0a664118a28ad5c931469102792f47807e4519614acae3d689ef39aab3b59486079def984dbda527554e36255785ff842851f7e59307d8c

Download Submit
C:\Users\Admin\AppData\Local\Temp\~TM14E0.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
106KB

MD5
7657fcb7d772448a6d8504e4b20168b8

SHA1
84c7201f7e59cb416280fd69a2e7f2e349ec8242

SHA256
54bc950d46a0d1aa72048a17c8275743209e6c17bdacfc4cb9601c9ce3ec9a71

SHA512
786addd2a793bd4123625b22dc717d193246442ac97f1c3f4a763ec794b48e68051cd41097c0e9f7367e6914534f36eafccb109ab03dc793d68bf1522e7884e2

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
106KB

MD5
7657fcb7d772448a6d8504e4b20168b8

SHA1
84c7201f7e59cb416280fd69a2e7f2e349ec8242

SHA256
54bc950d46a0d1aa72048a17c8275743209e6c17bdacfc4cb9601c9ce3ec9a71

SHA512
786addd2a793bd4123625b22dc717d193246442ac97f1c3f4a763ec794b48e68051cd41097c0e9f7367e6914534f36eafccb109ab03dc793d68bf1522e7884e2

Download Submit
memory/1128-138-0x0000000000000000-mapping.dmp

Download
memory/1128-143-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1308-135-0x0000000000000000-mapping.dmp

Download
memory/1308-142-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1312-144-0x0000000077B70000-0x0000000077D13000-memory.dmp

Filesize
1.6MB

Download
memory/1312-145-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1312-146-0x00000000005B0000-0x00000000005DA000-memory.dmp

Filesize
168KB

Download
memory/1312-131-0x0000000000000000-mapping.dmp

Download
memory/2992-130-0x0000000000000000-mapping.dmp

Download
memory/2992-133-0x0000000010000000-0x00000000100D1000-memory.dmp

Filesize
836KB

Download